This had been reported before but it got mixed inside a bigger sync issue at the time so probably fell through the cracks so bringing it back.
List views and Outline views are not providing the same information.
Given a board with 3 panes, the first pane being a List View grouped by Priority sort by created and filtered by “-is:complete #catproblemstosolve” -"Life Planning".
When I select Outline View it comes up with 50 visible items (10 High Priority, 15 medium, 40 Low, 12 No Priority).
When I select List View it comes up with 40 visible items (1 High, 2 Medium, 11 Low and 34 No priority).
The main difference is terribly noticeable in the high and medium priority groups where many items are missed in the List View. So List Views are still unreliable.